In general, it’s easier to use a wordpress plugin or other addon to backup your website but you can also use cPanel if you prefer:
Step 1: Open the Backup Wizard Application

You can select Backup and Backup Wizard. The latter is best for newbies.
Step 2: Back Up or Restore (Using the ‘ Backup Wizard’)

On the next page, you can either backup or restore your backup. If you don’t have any previous backups, click Back Up.
Step 3: Choose the Backup Type

N.B Full Backups cannot be used to restore your site directly via the cPanel interface. They are only for downloading a copy of your site or moving to a different server.
For now, we will select Full Backup.
Step 4: Generate the Backup

Do a backup of your website. Choose the location where you want the backup to be stored under Backup Destination. You have the option to set it to an external FTP in addition to your home directory. As soon as the backup is finished, a notification will be sent to the email specified in Email Address.